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Table 2 Mutations associated with kdr in ticks and insects

From: Physiological evidence that three known mutations in the para-sodium channel gene confer cypermethrin knockdown resistance in Rhipicephalus microplus

Domain

Nucleotide position

Nucleotide substitution

Amino acid substitution

Identified by

Standardized PCR assay

Organism and additional information (cited in)

II Susceptible population

148

C→T

Leu→Phe

[13]

None

R. microplus

II (super-kdr)

170

T→C

Met→Thr

[13]

[13]

Originally identified in Musca domestica. R. microplus [28,29,30]

II

184

G→C

Gly→Arg

[13]

None

R. microplus (Present study; [31,32,33]). This SNP occurs only in resistant poplulations that carry SNP T2134A

II Segment S4–5 linker

190

C→A

Leu→Ile

[16]

R. microplus [16]

R. microplus (Present study, [13, 34])

II

190

C→G

Leu→Val

[13]

None

R. microplus (Present study)

II Segment S4–5 linker

215

G→T

Gly→Val

[35]

[12]

R. microplus

III

2130

C→T

Silent

[13]

None

R. microplus

III Segment S6

2134

T→A

Phe→Ile

[14]

[31, 36]

R. microplus (Present study, [31,32,33]). This SNP occurs only in resistant populations that carry SNP G184C [13]

III

2157

G→T

Gly→Gly (Silent)

 

None

R. microplus (Present study)